func (state *renderState) init(eglState *platform.EGLState) error {
state.eglState = eglState
display := eglState.Display
surface := eglState.Surface
context := eglState.Context
width := eglState.SurfaceWidth
height := eglState.SurfaceHeight
if ok := egl.MakeCurrent(display, surface, surface, context); !ok {
return egl.NewError(egl.GetError())
}
// Create and setup the 3D world
state.world = cubelib.NewWorld(width, height)
state.world.SetCamera(0.0, 0.0, 5.0)
state.cube = cubelib.NewCube()
if err := state.cube.AttachTextureFromFile(TEXTURE_PNG); err != nil {
return err
}
state.world.Attach(state.cube)
state.angle = 0.0
return nil
}
// MakeContextCurrent bind the OpenGL context to the current thread.
func (win *window) MakeContextCurrent() {
if ok := egl.MakeCurrent(
win.eglState.Display,
win.eglState.Surface,
win.eglState.Surface,
win.eglState.Context); !ok {
Fatalf("%s", egl.NewError(egl.GetError()))
}
}